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Communication: FOURTH PERIOD

A randomized 25 question test from a pool of 761 questions, good luck!
Each network layer for a DCS has it's own specialized equipment or software. Which of the layers below would make use of a DeviceNet protocol?
There are several layers in the DCS architecture. Which of the levels below would have direct control over the systems FCEs?
Multi-path interference is a ________ source of radio wave deterioration. Choose from the answers below to best fill in the blank
Which of the recommended standards would be best described as having a half -duplex transmission system?
Model based network devices are at the user level of Ethernet/IP. Information of a capabilities or features of a specified device would be contained in which of the text files below?
IPv4 network classes can also be defined by the IP address they use. Which of the answers corresponds best to the address in row "D"?
Data communication in a DCS takes the form of various networks. Which of the networks below connect servers that share control data over redundant networks?
There are several layer within the a typical DCS., each with it's own responsibilities. Which of the levels below is responsible for the maintenance and configuration of the control system?
Ethernet network components provide several ISO layers of transmission control. Which of the network components below has transmission controls only on the ISO physical layer?
In the unbalanced signal transmission system, which answer best represents the number 4?
A DCS collects a lot of data during the course of operating. Which of the terms below would best describe the database that contains a record of process alarms and events as they occur?
Which of the answers below best represents the required nominal impedance of the data pair cabling in the DeviceNet system?
A DDE protocol has 3 components to a "handle". Which of the components below would best be described as the name of a unique data source is contained inside of a DDE server application ?
A typical DCS has at least four layers in it's architecture. Fieldbus and DeviceNet are all under the direct control of which of the layers below?
There are several different ways to let an operator know about an alarm in any HMI. Which of the answers below would best be described as a vibrations given off by a device?
There are many versions of Modbus, one of those is Modbus RTU. Which of the answers below correctly orders the components of the Modbus RTU frame?
Which answer below best represents the recommended standard for a null modem cable?
Communication technology is generally specific to a type of area network. Which of the area networks below would IDSN and DSL be used primarily?
Modbus protocol can implement data encapsulation over IP based networks. Which of the statements below is an disadvantage of using encapsulation?
IPv4 and IPv6 are the two current versions of IP. Which of the answers below is the defining difference between the two protocols?
Modbus has standard command codes to allow the master to access information from it's slaves. Which of the commands below would be used to request the content of the slaves holding registers # 40108?
Which of the terms below is best described as the devices,in general, that are the final connections off of a segments spur cable?
Using the table below, Select the answer below that best represents an asychronous transmission of the letter "Y" with 7 data bits, two stop bits, and even parity?
There are a collection of standards that defines the access control for wireless Ethernet. Which one of the answers below is the standard for initiating a WLAN?
A modern DCS needs to be able to respond to growing demands. Which of the terms below is best defined as the measure of a system's ability to increase or decrease in performance and cost in response to changes in application and system processing demands.